Oil giant BP has announced it is pausing all shipments of oil through the Red Sea after recent attacks on vessels by Houthi rebels.
BP blamed the “deteriorating security situation” in the region as Houthis target ships they believe are bound for Israel.
Many freight firms have suspended journeys as the attacks continue.
On Monday, one of the world’s largest shipping firms said it would no longer carry Israeli cargo via the Red Sea.
In an update seen by the BBC, Evergreen Line, said: “For the safety of ships and crew, Evergreen Line has decided to temporarily stop accepting Israeli cargo with immediate effect, and has instructed its container ships to suspend navigation through the Red Sea until further notice.”
The Red Sea is one of the world’s most important routes for oil and fuel shipments, as well as for consumer goods.
Iran-backed Houthi rebels are targeting ships travelling through the Bab al-Mandab Strait – also known as the Gate of Tears – which is a channel 20 miles (32km) wide, and known for being perilous to navigate.
The rebels have declared their support for Hamas and have said they are targeting ships travelling to Israel, using drones and rockets against foreign-owned vessels.
It is not clear if all the ships they have attacked were actually heading to Israel.
In the most recent reported attack, the owner of the MT Swan Atlantic said the ship was hit by an “unidentified object” on Monday while in the Red Sea off Yemen despite there being no links to Israel.
Inventor Chemical Tankers said: “For the record, there is no Israeli link in the ownership (Norwegian), technical management (Singapore) of the vessel nor in any parts of the logistical chain for the cargo transported.”
Israel launched a military campaign in Gaza following the 7 October attacks by Hamas that killed 1,200 people. The Hamas-run health ministry in Gaza said more than 18,700 have been killed since the start of the war.
Commenting on its decision to temporarily suspend oil shipments in the strait, BP said: “The safety and security of our people and those working on our behalf is BP’s priority.
“We will keep this precautionary pause under ongoing review, subject to circumstances as they evolve in the region.”
Analysts suggested that if other large oil firms follow suit, there may be some impact on crude prices in Europe and the Mediterranean. Brent crude, the international benchmark for oil prices, edged up to $77.17 per barrel.
“Right now it’s unclear how significant the impact will be, though if more shipping companies divert their traffic, and if the disruption lasts more than a week or two, prices are likely to climb further,” said Gregory Brew, an oil historian and analyst at Eurasia Group.